材料科学
螺栓连接
激发
有限元法
结构工程
接头(建筑物)
接触力学
复合材料
机械
工程类
物理
电气工程
作者
Xuetong Liu,Jianfei Fan,He Wang,Junyao Jiang,Jianhua Liu,Xiufang Gong,Jinfang Peng,Minhao Zhu
标识
DOI:10.1016/j.triboint.2022.107764
摘要
A theoretical analysis method is proposed for bolted joint under low frequency torsional excitation, based on which the changes of bolt axial force can be divided into three scenarios, continuous rapid drop, remaining unchanged and fluctuating. The structural hysteresis loops of the three scenarios are slightly different in shape. The stress distribution on contact surfaces is not uniform, which affects the corresponding equivalent friction diameters. Finite element analysis is carried out to calculate the equivalent friction diameters of interfaces. Furthermore, wear-induced loosening is investigated numerically based on Archard’s theory with MATLAB. Numerical analysis shows that interface wear causes bolt self-loosening, and wear depth values between threads are different, which causes decreased axial force and load redistribution between threads.
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